-er -ic c-- ccc cce cci ccm cco ccr cct ce- cec cee cei cem ceo cer cet ci- cic cie cii cim cio cir cit cmc cme cmi cmm cmo cmr cmt co- coc coe coi com coo cor cot crc cre cri crm cro crr crt ctc cte cti ctm cto ctr ctt ec- ecc ece eci ecm eco ecr ect eec eee eem eeo eer eet eic eie eii eim eio eir eit em- emc eme emi emm emo emr emt eo- eoc eoe eoi eom eoo eor eot erc ere eri erm ero err ert etc ete eti etm eto etr ett icc ice ici icm ico icr ict ie- iec iee iei iem ier iet iic iie iii iim iio iir iit im- imc ime imi imm imo imt io- ioc ioe ioi iom ioo ior iot ir- irc ire iri irm iro irr irt itc ite iti itm ito itt m-o m-r mc- mcc mce mci mcm mco mcr mct mec mee mei mem meo mer met mi- mic mie mii mim mio mir mit mmc mme mmi mmm mmo mmr mmt moc moe moi mom moo mor mot mrc mre mri mrm mro mrr mrt mtc mte mti mtm mto mtr mtt o-i oc- occ oci ocm oco ocr oct oec oee oei oem oeo oer oet oic oie oii oim oio oir oit om- omc ome omi omm omo omr omt oo- ooc ooi oom ooo oor oot or- orc ore ori orm oro orr ort ot- otc ote oti otm oto otr ott rcc rce rci rcm rco rcr rct re- rec ree rei rem reo rer ret ric rie rii rim rio rir rit rmc rme rmi rmm rmo rmr rmt roc roe roi rom roo ror rot rrc rri rrm rrr rrt rtc rte rti rtm rto rtr rtt tcc tce tci tcm tco tcr tct te- tec tee tei tem teo ter tet tic tie tii tim tio tir tit tmc tme tmi tmm tmo tmr tmt to- toc toe toi tom too tor tot trc tre tri trm tro trr trt ttc tte tti ttm tto ttr ttt